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Finding the Fourth Proportional to 170,121.60, 256,456.80 and 158,703.84

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Solution

The fourth proportional to 170,121.60, 256,456.80 and 158,703.84 is: 239,244.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,121.60 : 256,456.80 = 158,703.84 : x
  2. Step 2: Convert to fraction form
    170,121.60/256,456.80 = 158,703.84/x
  3. Step 3: Cross multiply
    170,121.60x = 256,456.80 × 158,703.84
  4. Step 4: Simplify right side
    170,121.60x = 40,700,678,954.11
  5. Step 5: Solve for x
    x = 40,700,678,954.11/170,121.60
  6. Step 6: Final answer
    x = 239,244.63

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.